Related Experiment Video
Updated: Jun 10, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
A Review on Jahn-Teller Distortions in Prussian Blue Analogs Molecular Magnets
Nilasha Maiti1,2, Sher Singh Meena1, Pramod Bhatt1,2
1Solid State Physics Division,, Bhabha Atomic Research Centre, Mumbai, India.
None:
Prussian blue analogs (PBAs) represent a versatile class of molecule-based magnetic materials in which subtle changes or distortion in local coordination geometry can strongly influence their macroscopic properties. In general, many types of distortions could exist in PBAs, such as octahedral tilts, A-site slides, Jahn-Teller (JT), vacancy, hydration-driven distortions, and so on. Among all types of distortions, JT distortions play a pivotal role by coupling electronic degeneracy with lattice deformation, thereby governing structural symmetry, magnetic exchange pathways, and ion-transport behavior. In addition, JT distortions play a pivotal role in governing the structural phase transitions of PBAs. This review critically surveys the latest advances in understanding how JT distortions, particularly those induced by the spin configuration of JT-active transition-metal ions, drive symmetry-breaking phase transitions within PBA frameworks. The interplay between electronic structure and lattice deformation is discussed, highlighting the mechanisms by which distortion leads to new crystallographic phases, influences ion diffusion, and modulates the electrochemical properties. Special attention is given to understanding the evolution of the JT effect in relation to structural phase transitions. It also summarizes effective strategies to suppress unwanted phase changes and improve overall structural stability. Ultimately, this review elucidates how control over JT effects can tailor electrochemical properties such as specific capacity, cycling stability, and voltage profile, offering design principles for the next generation of high-performance PBA-based energy materials.
Related Concept Videos
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...
π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds
π Electron Effects on Chemical Shift: Overview
Diamagnetism
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

